DB16 intellectual NDT instrument for large-size geotechnical engineering and its application

In this paper, the intellectual nondestructive testing (NDT) instrument for largesize geotechnical engineering and its application are presented. The instrument consists of large power rare earth magnetostrictive transducer, which has focused energy and good repetition, DB16 digital acquisition system that communicates with personal computer (PC) or notebook PC by parallel interface and high sensitive (PZT) transducer with low frequency. The data is dealt with computerized tomography (CT) technology and the results are color contour map. The manipulations of parameter setting, data acquisition and save, CT calculation and contour map are completed with one special program.